I am having an issue with my 2008 Rhino Hunter S Choppper. The Carb is not running correctly. The choke is pulled to open and the bike starts and idles high of course but, when I put the choke all the way back in the bike just dies. Any other options that could lead to a vacuum leak in the carb by chance? Went thru the carb but, did not do anything with the vacuum side for I donĀ“t know anything about that.